FreeToolStation

URL Decoder

Turn percent-encoded text back into something readable.

Encoding & Conversion Free, no sign-up Runs in your browser

About the URL Decoder

URL Decoder converts percent escapes back into the characters they represent, turning something like hello%20world%21 into hello world!. It is the quickest way to read an encoded redirect target, a tracking parameter or a log entry without decoding it in your head.

Decoding is UTF-8 aware, so a sequence such as %C3%A9 becomes a single accented letter rather than two broken symbols. Plus signs can optionally be treated as spaces, which is what you need when the string came from an HTML form rather than from a URL path.

Double encoding is common and confusing: a value that was encoded twice shows sequences like %2520 where %25 is itself an encoded percent sign. The tool detects this and offers to decode repeatedly until the text stops changing, so you reach the real value in one step.

Looking for something this does not cover? FreeToolStation.com is a second collection of the same kind of everyday tools, and it is worth a look if url decoder is only part of what you are working on.

How to use the URL Decoder

  1. Paste the encoded textDrop in the URL or parameter value you want to read.
  2. Choose how plus signs are handledTreat them as spaces if the value came from a form submission.
  3. Enable repeat decoding if neededUse it when you see %25 sequences, which signal double encoding.
  4. Copy the readable resultTake the decoded text with the copy button.

Features

  • Correct UTF-8 decoding of multi-byte characters
  • Optional plus-sign-as-space handling
  • Repeat decoding for double-encoded strings
  • Clear error when a percent escape is malformed
  • Live result as you type
  • Copy in one click

Who uses this tool

The url decoder is used by writers, developers, students, marketers and anyone else who needs the job done once without installing software. Common cases include:

  • Reading the real destination of a redirect link
  • Understanding tracking parameters in a campaign URL
  • Making server log entries readable
  • Debugging form submissions that arrive encoded
  • Recovering file names with accents from a download link

Frequently asked questions

Why does decoding fail with a malformed sequence error?

A percent sign must be followed by exactly two hexadecimal digits. If the text contains a bare percent sign, or the string was cut off mid-escape, decoding cannot continue. Check that the value was copied in full.

What does it mean when I see %2520 in a URL?

The value was encoded twice. The %25 is an encoded percent sign, so after one pass you get %20 and after a second pass you get a space. Switch on repeat decoding to resolve it in one step.

Should plus signs always become spaces?

Only when the value came from an HTML form, where plus historically means space. In a normal URL path a plus sign is a literal plus, so converting it would corrupt the value. That is why the behaviour is a switch rather than a default.

Can I decode a whole URL at once?

Yes. Decoding a full address is safe and useful for reading it, but remember the decoded version may no longer be a valid URL if it contained encoded separators.

Is anything sent to a server?

No. Decoding uses built-in browser functions inside the page, so tokens and parameters you paste stay on your device.

Does decoding tell me if a link is safe?

It reveals where a link actually points, which helps you spot a disguised destination, but it makes no judgement about whether that destination is trustworthy.

If the url decoder is not quite what you need, these other free tools solve closely related problems, and there are 8 more in encoding & conversion.

URL Encoder

Escape spaces, symbols and non-ASCII characters for use in URLs.

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Checked and rebuilt on 2026-10-14. The method this calculator uses is described in the section above, and corrections go through the contact page.